diff options
Diffstat (limited to 'src/net/http/sniff_test.go')
-rw-r--r-- | src/net/http/sniff_test.go | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/net/http/sniff_test.go b/src/net/http/sniff_test.go new file mode 100644 index 000000000..24ca27afc --- /dev/null +++ b/src/net/http/sniff_test.go @@ -0,0 +1,171 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package http_test + +import ( + "bytes" + "fmt" + "io" + "io/ioutil" + "log" + . "net/http" + "net/http/httptest" + "reflect" + "strconv" + "strings" + "testing" +) + +var sniffTests = []struct { + desc string + data []byte + contentType string +}{ + // Some nonsense. + {"Empty", []byte{}, "text/plain; charset=utf-8"}, + {"Binary", []byte{1, 2, 3}, "application/octet-stream"}, + + {"HTML document #1", []byte(`<HtMl><bOdY>blah blah blah</body></html>`), "text/html; charset=utf-8"}, + {"HTML document #2", []byte(`<HTML></HTML>`), "text/html; charset=utf-8"}, + {"HTML document #3 (leading whitespace)", []byte(` <!DOCTYPE HTML>...`), "text/html; charset=utf-8"}, + {"HTML document #4 (leading CRLF)", []byte("\r\n<html>..."), "text/html; charset=utf-8"}, + + {"Plain text", []byte(`This is not HTML. It has ☃ though.`), "text/plain; charset=utf-8"}, + + {"XML", []byte("\n<?xml!"), "text/xml; charset=utf-8"}, + + // Image types. + {"GIF 87a", []byte(`GIF87a`), "image/gif"}, + {"GIF 89a", []byte(`GIF89a...`), "image/gif"}, + + // TODO(dsymonds): Re-enable this when the spec is sorted w.r.t. MP4. + //{"MP4 video", []byte("\x00\x00\x00\x18ftypmp42\x00\x00\x00\x00mp42isom<\x06t\xbfmdat"), "video/mp4"}, + //{"MP4 audio", []byte("\x00\x00\x00\x20ftypM4A \x00\x00\x00\x00M4A mp42isom\x00\x00\x00\x00"), "audio/mp4"}, +} + +func TestDetectContentType(t *testing.T) { + for _, tt := range sniffTests { + ct := DetectContentType(tt.data) + if ct != tt.contentType { + t.Errorf("%v: DetectContentType = %q, want %q", tt.desc, ct, tt.contentType) + } + } +} + +func TestServerContentType(t *testing.T) { + defer afterTest(t) + ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { + i, _ := strconv.Atoi(r.FormValue("i")) + tt := sniffTests[i] + n, err := w.Write(tt.data) + if n != len(tt.data) || err != nil { + log.Fatalf("%v: Write(%q) = %v, %v want %d, nil", tt.desc, tt.data, n, err, len(tt.data)) + } + })) + defer ts.Close() + + for i, tt := range sniffTests { + resp, err := Get(ts.URL + "/?i=" + strconv.Itoa(i)) + if err != nil { + t.Errorf("%v: %v", tt.desc, err) + continue + } + if ct := resp.Header.Get("Content-Type"); ct != tt.contentType { + t.Errorf("%v: Content-Type = %q, want %q", tt.desc, ct, tt.contentType) + } + data, err := ioutil.ReadAll(resp.Body) + if err != nil { + t.Errorf("%v: reading body: %v", tt.desc, err) + } else if !bytes.Equal(data, tt.data) { + t.Errorf("%v: data is %q, want %q", tt.desc, data, tt.data) + } + resp.Body.Close() + } +} + +// Issue 5953: shouldn't sniff if the handler set a Content-Type header, +// even if it's the empty string. +func TestServerIssue5953(t *testing.T) { + defer afterTest(t) + ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { + w.Header()["Content-Type"] = []string{""} + fmt.Fprintf(w, "<html><head></head><body>hi</body></html>") + })) + defer ts.Close() + + resp, err := Get(ts.URL) + if err != nil { + t.Fatal(err) + } + + got := resp.Header["Content-Type"] + want := []string{""} + if !reflect.DeepEqual(got, want) { + t.Errorf("Content-Type = %q; want %q", got, want) + } + resp.Body.Close() +} + +func TestContentTypeWithCopy(t *testing.T) { + defer afterTest(t) + + const ( + input = "\n<html>\n\t<head>\n" + expected = "text/html; charset=utf-8" + ) + + ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { + // Use io.Copy from a bytes.Buffer to trigger ReadFrom. + buf := bytes.NewBuffer([]byte(input)) + n, err := io.Copy(w, buf) + if int(n) != len(input) || err != nil { + t.Errorf("io.Copy(w, %q) = %v, %v want %d, nil", input, n, err, len(input)) + } + })) + defer ts.Close() + + resp, err := Get(ts.URL) + if err != nil { + t.Fatalf("Get: %v", err) + } + if ct := resp.Header.Get("Content-Type"); ct != expected { + t.Errorf("Content-Type = %q, want %q", ct, expected) + } + data, err := ioutil.ReadAll(resp.Body) + if err != nil { + t.Errorf("reading body: %v", err) + } else if !bytes.Equal(data, []byte(input)) { + t.Errorf("data is %q, want %q", data, input) + } + resp.Body.Close() +} + +func TestSniffWriteSize(t *testing.T) { + defer afterTest(t) + ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { + size, _ := strconv.Atoi(r.FormValue("size")) + written, err := io.WriteString(w, strings.Repeat("a", size)) + if err != nil { + t.Errorf("write of %d bytes: %v", size, err) + return + } + if written != size { + t.Errorf("write of %d bytes wrote %d bytes", size, written) + } + })) + defer ts.Close() + for _, size := range []int{0, 1, 200, 600, 999, 1000, 1023, 1024, 512 << 10, 1 << 20} { + res, err := Get(fmt.Sprintf("%s/?size=%d", ts.URL, size)) + if err != nil { + t.Fatalf("size %d: %v", size, err) + } + if _, err := io.Copy(ioutil.Discard, res.Body); err != nil { + t.Fatalf("size %d: io.Copy of body = %v", size, err) + } + if err := res.Body.Close(); err != nil { + t.Fatalf("size %d: body Close = %v", size, err) + } + } +} |